Stockholders' Equity (Reclassifications Out of Accumulated Other Comprehensive Income/ (Loss) (Details) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
Aug. 01, 2015 |
Aug. 02, 2014 |
Aug. 01, 2015 |
Aug. 02, 2014 |
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax |
|
$ 29
|
$ 16
|
$ 58
|
$ 33
|
| Total, net of tax |
|
12
|
10
|
29
|
20
|
| Reclassification out of Accumulated Other Comprehensive Income [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Total reclassifications |
|
19
|
10
|
36
|
20
|
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Total Amortization Of Retirement Benefit Plans, Net Of Tax [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Total, net of tax |
|
19
|
10
|
36
|
20
|
| Reclassification out of Accumulated Other Comprehensive Income [Member] | SG&A [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Amortization of retirement benefit plans, Prior service cost/(credit) |
[1] |
(2)
|
(2)
|
(4)
|
(4)
|
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Expense [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net |
|
2
|
0
|
2
|
0
|
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Income Tax (Expense)/Benefit [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Amortization of retirement benefit plans, Tax (expense)/benefit |
|
12
|
7
|
24
|
13
|
| Pension [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Amortization of retirement benefit plans, Actuarial loss/(gain) |
|
(29)
|
(16)
|
(58)
|
(33)
|
| Amortization of retirement benefit plans, Prior service cost/(credit) |
|
(2)
|
(3)
|
(4)
|
(4)
|
| Pension [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] |
|
|
|
|
|
| Other Comprehensive Income (Loss), Net of Tax [Abstract] |
|
|
|
|
|
| Amortization of retirement benefit plans, Actuarial loss/(gain) |
[1] |
29
|
16
|
58
|
33
|
| Amortization of retirement benefit plans, Prior service cost/(credit) |
[1] |
$ 2
|
$ 3
|
$ 4
|
$ 4
|
|
|